超短基线定位系统在深水工程勘察中的应用

Application of Ultra-short Baseline Positioning System in Deep Sea Geotechnical Investiation

深拖和AUV调查是深水工程勘察主要作业方式,精确确定深拖拖体、AUV在水下的位置对深海工程勘察作业至关重要。目前水下定位多采用声学导航定位,其中超短基线定位系统因其结构简单、操作便利、测距精度高、成本低等诸多优势而广泛应用于深水工程勘察作业中。文章介绍了超短基线水下导航定位原理与系统组成,分析了超短基线定位影响因素及提升定位精度的方法。结合实例,阐述了超短基线在深拖与AUV深水工程勘察作业中的应用。

Deep towing and AUV surveys are the main operation methods in deep sea geotechnical investigation.,the positioning accuracy of deep-towing bodies and AUVs is very important for deep sea geotechnical investigation.At present,underwater positioning mostly uses acoustic navigation and positioning,the ultra-short baseline positioning system is widely used in deep sea geotechnical investigation due to its simple mechanism,convenient operation,high ranging accuracy,and low cost.The article introduces the principle and system composition of ultra-short baseline system,analyzes the factors influencing ultra-short baseline positioning and methods to improve positioning accuracy.Combined with examples,the application of ultra-short baselines in deep towing and AUV deep-sea marine engineering survey operations is explained.